Folger Aluminum Kossel corners - warning!

I had the same problem when i assembled my printer.
I loosened all the bolts slightly, and forced them together, then tightened everything up.
The error has been evened out on all the joints, it looks good to me.

But i do agree that the cornes should be at 60* for it to be right.
That, and using t-slot screws with bolts would have made everything easier to assemble. Easier to turn the nuts, and easier to tighten with a wrench, there is not really enough space for unbracos.